Prettier 3D Skyboxes

Could somebody help me with 3D Skyboxes?
In other maps, the 3D Skybox tells a "story" that is sort of behind the map you are playing and adds more depth into it.
My 3D Skyboxes are just hills with some 3d skybox props..

Well... that is actualy pretty much most of the skyboxes I have seen. A bland landscape with minor details.
Does your skybox not look as pretty as you want? I suggest looking at other maps and see how they made their skybox, to get some ideas.

Without any screenshots it's impossible to give specific feedback. Post 'em in the WIP thread and you're sure to get something.

In general though, the skybox is only there to give some context and conceal the horizon. It should be mostly just hills and a few props.. save the detail for the actual map because that's what players actually look at.